Chill for use in casting cross-heads



(No Model.) 2 Sheets-Sheet 1.

J. BARCLAY CHILL FOR USE IN CASTING GROSS HEADS. No. 348.819.

Patented Sept. 7, 1886.

2 Sheets-Sheet 2.

(No Mddel.)

J. BARGLAY CHILL FOR USE IN CASTING (moss HEADS.

Patented Sept; 7, 1886.

N. PETERS. Plmloiilhngmphcn Wnshmglnn D. C,

UNITED STATES PATENT OFFICE.

JAMES BARCLAY, OF ERIE, PENNSYLVANIA.

CHILL FOR USE IN CASTING CROSS-HEADS.

CIFICATION forming part of Letters Patent No. 348,819, dated September 7, 1886.

Application filed November 30, 1885. Serial K018453137. (No mull 1.)

To all whom it may concern:

Be it known that I, J AMES BARCLAY, a citizen of Canada, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in the Construction of Chills forUse in (lasting Cross-Heads for Steam-l lngines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the manufacture of cross-heads; and it consists in certain improvements in the construction of a chill for use in casting the same, as will be hereinafter fully set forth, and pointed out in the claims.

The object of the invention is to provide a cross-head which shall have its connectingrod pin, the bosses or shoulders at the ends of the pin, the walls of the slot which contains the pin, and the piston-stem hole formed on a chill in the mold,- so that they will require no machinewvork done on them. To el'l'ect this result a pcculiarly-constructed chill or former has to be provided, and this constitutes the subjectmatter of my in vention.

The invention is illustrated in the acconr panying drawings as follows: Figure 1 is a perspective view of a cross-head. Fig. 2 is an end view of the pattern shown in Fig. 3. Fig. 3 shows the pattern in the flask. Fig. 4 shows thecastiug in the flask, the sand being removed. Fig. 5 is a horizontal central section of the casting, the chill or former being shown in elevation, taken on the line 3 1 in Fig. 1. Fig. 6 is a vertical central section of the same parts on the line .t 00 in Fig. 1. Fi 7 is a perspective view of the chill. Fig. Sis a vertical central section through the flask (cope and d rag) containing the chill and the cross-head embedded in the sand. Fig. 9 is a like view showing the pattern embedded in the sand. The dotted lines in these two lastnamed figures are on the parting-line of the mold and pattern.

Letters of reference indicate parts as follows: A is the body of the cross-head; A, the connecting-rod pin; A", the piston-stem hole; A, the wall of the slot or fork of the crosshead 5 a, the shoulder or bosses at the ends of the pin.

B is the body of the pattern; B, the chillprint of the pattern; 13*, the supports of the pattern.

0 is the flask; C. the support-beariugs.

T) is the main chill or former.

D is a hole through the part D,which forms the pin A.

l) is the support.

I) is the mandrel,which forms the pistonstem hole, and also serves as a support.

(1 is a countersink in the side of the former I), which forms the bosses a.

The pattern B B does not differ materially from what it would be if a sand core was to be used to form ton-stem hole. The flask O is made with bearings O O, for the support-s B" B of the pattern and D D of the former or chill.

The chill-body D is divided horizontally on the line (l into two parts, which draw in opposite directions, and are held together by bolts (1 d, Sac. In Fig. 5 the abutting face of one of these parts is shown. These parts are so formed that when bolted together there will be a transverse opening, D, through the body, a countersink, (6, around the edges of the opening D, a longitudinally-arranged round tapering opening, 17., to receive and hold the mandrel l), and a support, I)", at the outer end. The opening (1 is arranged with its axis at exactly right angles to, and in a horizontal plane with, the axis of the piiropening D, so that the hole A in the cross-head, formed by the mandrel D will have its axis at exactly right angles to, and in a horizontal plane with, the axis of the pin A, which is formed by the opening D. The mandrel D is made tapering, so as to draw from the castin The outer end of mandrel I) serves as a support in the same manner as the projection D at the outer end of the chill-body.

The mold is made in the same manner as commonly, and after the pattern is removed, and before the mold is closed, the chill is adjusted in place. I

To adjust the chill in position in the mold, the mandrel D is put in place in the bodyD, and the whole device is adjusted in the sup ports C O in the same manner as if it was a sand core. The casting, after it comes from the sand, is stripped of the chill by unscrewthe slot, the pin, and the pis besides being much cheaper, by reason of the saving of machine-work in finishing it, sesses other advantages, viz: The pin is much harder and will wear longer, and the pistonstem opening is invariably in exact line with both the horizontal and transverse vertical axis of the pin, while in a maehine-finished cross-head there is apt to be more or less deviation.

pos-

WVhat I claim as new is- 1. In a chill for casting cross-heads for steam or other engines, the combination, substantially as set forth of the body D, parted on a central horizontal plane and having openings D and d, as set forth, and the tapering mandrel D, inserted in said opening d.

2. In a chill for casting cross-heads forsteam and other engines, the combination, substantially as set forth, of the body D, parted on a central horizontal plane and having openings D and d, the eountersinks d at the edges of the opening D, and a projecting support, D and the tapering mandrel D, inserted in said opening (1".

In testimony whereof I affix my signaturein presence of two witnesses.

JAMES BARCLAY.

\Vitnesses:

J NO. K. HALLOCK, RoBT. H. PORTER. 

